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Characteristics of the Surface Plasmon–Polariton Resonance in a Metal Grating, as a Sensitive Element of Refractive Index Change

The resonant excitation of surface plasmon–polariton waves in metal gratings with rectangular and sinusoidal relief was studied. The main characteristics of the resonant excitation of a surface plasmon–polariton wave were obtained using analytical methods due to the fact that the resonance is excite...

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Autores principales: Bellucci, Stefano, Vernyhor, O., Bendziak, A., Yaremchuk, I., Fitio, V. M., Bobitski, Y.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7215381/
https://www.ncbi.nlm.nih.gov/pubmed/32316362
http://dx.doi.org/10.3390/ma13081882
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author Bellucci, Stefano
Vernyhor, O.
Bendziak, A.
Yaremchuk, I.
Fitio, V. M.
Bobitski, Y.
author_facet Bellucci, Stefano
Vernyhor, O.
Bendziak, A.
Yaremchuk, I.
Fitio, V. M.
Bobitski, Y.
author_sort Bellucci, Stefano
collection PubMed
description The resonant excitation of surface plasmon–polariton waves in metal gratings with rectangular and sinusoidal relief was studied. The main characteristics of the resonant excitation of a surface plasmon–polariton wave were obtained using analytical methods due to the fact that the resonance is excited at a grating thickness much smaller than a wavelength (1.064 µm). It is shown that the obtained results are very close to those calculated using numerical methods, e.g., Rigorous Coupled Wave Approach (RCWA). There is a small difference in the numerical data defined by both methods. The difference between the parameters for the two types of gratings is small. New analytical relationships of angular and spectral sensitivities with the change of the refractive index of the medium were obtained, depending on the grating period and the angle of incidence of the light beam. An analytical relationship between the spectral and angular widths of the resonant curves, at full width at half maximum, was determined.
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spelling pubmed-72153812020-05-18 Characteristics of the Surface Plasmon–Polariton Resonance in a Metal Grating, as a Sensitive Element of Refractive Index Change Bellucci, Stefano Vernyhor, O. Bendziak, A. Yaremchuk, I. Fitio, V. M. Bobitski, Y. Materials (Basel) Article The resonant excitation of surface plasmon–polariton waves in metal gratings with rectangular and sinusoidal relief was studied. The main characteristics of the resonant excitation of a surface plasmon–polariton wave were obtained using analytical methods due to the fact that the resonance is excited at a grating thickness much smaller than a wavelength (1.064 µm). It is shown that the obtained results are very close to those calculated using numerical methods, e.g., Rigorous Coupled Wave Approach (RCWA). There is a small difference in the numerical data defined by both methods. The difference between the parameters for the two types of gratings is small. New analytical relationships of angular and spectral sensitivities with the change of the refractive index of the medium were obtained, depending on the grating period and the angle of incidence of the light beam. An analytical relationship between the spectral and angular widths of the resonant curves, at full width at half maximum, was determined. MDPI 2020-04-16 /pmc/articles/PMC7215381/ /pubmed/32316362 http://dx.doi.org/10.3390/ma13081882 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bellucci, Stefano
Vernyhor, O.
Bendziak, A.
Yaremchuk, I.
Fitio, V. M.
Bobitski, Y.
Characteristics of the Surface Plasmon–Polariton Resonance in a Metal Grating, as a Sensitive Element of Refractive Index Change
title Characteristics of the Surface Plasmon–Polariton Resonance in a Metal Grating, as a Sensitive Element of Refractive Index Change
title_full Characteristics of the Surface Plasmon–Polariton Resonance in a Metal Grating, as a Sensitive Element of Refractive Index Change
title_fullStr Characteristics of the Surface Plasmon–Polariton Resonance in a Metal Grating, as a Sensitive Element of Refractive Index Change
title_full_unstemmed Characteristics of the Surface Plasmon–Polariton Resonance in a Metal Grating, as a Sensitive Element of Refractive Index Change
title_short Characteristics of the Surface Plasmon–Polariton Resonance in a Metal Grating, as a Sensitive Element of Refractive Index Change
title_sort characteristics of the surface plasmon–polariton resonance in a metal grating, as a sensitive element of refractive index change
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7215381/
https://www.ncbi.nlm.nih.gov/pubmed/32316362
http://dx.doi.org/10.3390/ma13081882
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